[INFO] cloning repository https://github.com/m-bra/swirl [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/m-bra/swirl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-bra%2Fswirl", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-bra%2Fswirl'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9a1469edf499b0c1b8e76ab63b18679777dafcfb [INFO] checking m-bra/swirl against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-bra%2Fswirl" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/m-bra/swirl on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/m-bra/swirl [INFO] finished tweaking git repo https://github.com/m-bra/swirl [INFO] tweaked toml for git repo https://github.com/m-bra/swirl written to /workspace/builds/worker-1/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ccbf89e341aa32644712f4d5737d16064bcaad47ed46b19234bf27875db1780c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "ccbf89e341aa32644712f4d5737d16064bcaad47ed46b19234bf27875db1780c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ccbf89e341aa32644712f4d5737d16064bcaad47ed46b19234bf27875db1780c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ccbf89e341aa32644712f4d5737d16064bcaad47ed46b19234bf27875db1780c", kill_on_drop: false }` [INFO] [stdout] ccbf89e341aa32644712f4d5737d16064bcaad47ed46b19234bf27875db1780c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b4daef3d41d7ea1440443f67f6388660cfc1124b15fb6e8bfa387f62aa5d9cfb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b4daef3d41d7ea1440443f67f6388660cfc1124b15fb6e8bfa387f62aa5d9cfb", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling serde v1.0.118 [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling serde_json v1.0.61 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling serde_derive v1.0.118 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking half v1.6.0 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Checking nom v1.2.4 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Checking finally-block v0.2.0 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking meval v0.2.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling memoffset v0.6.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling syn v1.0.57 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking crossbeam-epoch v0.9.1 [INFO] [stderr] Checking crossbeam-channel v0.5.0 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking plotters v0.2.15 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking rayon-core v1.9.0 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking bstr v0.2.14 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.5 [INFO] [stderr] Checking tinytemplate v1.2.0 [INFO] [stderr] Checking criterion v0.3.3 [INFO] [stderr] Checking swirl v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `level` is never read [INFO] [stdout] --> src/mmatch/match_invocation_string.rs:250:13 [INFO] [stdout] | [INFO] [stdout] 250 | level -= 1; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | Err(err) => None, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `frame_result` is never read [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:126:25 [INFO] [stdout] | [INFO] [stdout] 126 | let mut frame_result = Ok(("", InvocStrResult::empty())); // result of current frame [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `recursion_var` [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:102:22 [INFO] [stdout] | [INFO] [stdout] 102 | let (recursion_var, recursive_param) = match unsafe { self.header().end_invocation().unwrap() } { [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursion_var` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rule_name` [INFO] [stdout] --> src/types/rule_variant.rs:121:30 [INFO] [stdout] | [INFO] [stdout] 121 | pub fn on_success(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/types/rule_variant.rs:121:47 [INFO] [stdout] | [INFO] [stdout] 121 | pub fn on_success(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rule_name` [INFO] [stdout] --> src/types/rule_variant.rs:133:30 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn on_failure(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/types/rule_variant.rs:133:47 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn on_failure(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:237:9 [INFO] [stdout] | [INFO] [stdout] 237 | let mut is_stepping = args.any(|s| s == "--step" || s == "-s"); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `level` is never read [INFO] [stdout] --> src/mmatch/match_invocation_string.rs:250:13 [INFO] [stdout] | [INFO] [stdout] 250 | level -= 1; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | Err(err) => None, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `frame_result` is never read [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:126:25 [INFO] [stdout] | [INFO] [stdout] 126 | let mut frame_result = Ok(("", InvocStrResult::empty())); // result of current frame [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `recursion_var` [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:102:22 [INFO] [stdout] | [INFO] [stdout] 102 | let (recursion_var, recursive_param) = match unsafe { self.header().end_invocation().unwrap() } { [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursion_var` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rule_name` [INFO] [stdout] --> src/types/rule_variant.rs:121:30 [INFO] [stdout] | [INFO] [stdout] 121 | pub fn on_success(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/types/rule_variant.rs:121:47 [INFO] [stdout] | [INFO] [stdout] 121 | pub fn on_success(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rule_name` [INFO] [stdout] --> src/types/rule_variant.rs:133:30 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn on_failure(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/types/rule_variant.rs:133:47 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn on_failure(&self, rule_name: &str, input: &str) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:237:9 [INFO] [stdout] | [INFO] [stdout] 237 | let mut is_stepping = args.any(|s| s == "--step" || s == "-s"); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static variable `first` should have an upper case name [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | static mut first: bool = true; [INFO] [stdout] | ^^^^^ help: convert the identifier to upper case: `FIRST` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static variable `first` should have an upper case name [INFO] [stdout] --> src/mmatch/match_rule_variant.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | static mut first: bool = true; [INFO] [stdout] | ^^^^^ help: convert the identifier to upper case: `FIRST` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 52.11s [INFO] running `Command { std: "docker" "inspect" "b4daef3d41d7ea1440443f67f6388660cfc1124b15fb6e8bfa387f62aa5d9cfb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b4daef3d41d7ea1440443f67f6388660cfc1124b15fb6e8bfa387f62aa5d9cfb", kill_on_drop: false }` [INFO] [stdout] b4daef3d41d7ea1440443f67f6388660cfc1124b15fb6e8bfa387f62aa5d9cfb